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You searched for: mediatype:movies AND collection:CHEM_study_films AND subject:"Chemistry"
[movies]Pimentel Discusses the Hydrogen Atom - CHEM Study, College of Chemistry, U.C. Berkeley
This film was not made to be shown to students. It is a lecture by Prof. George G. Pimentel designed for teachers to reinforce background materials related to films #4148 and #4149 in the Film and Course Teachers Guides.
Keywords: chemistry; CHEM Study Film; George Pimentel
Downloads: 255
[movies]Pimentel Discusses Chemical Bonding - CHEM Study, College of Chemistry, U.C. Berkeley
Professor Pimentel amplifies the idea that attraction of one or more electrons for two or more nuclei accounts for bond formation. The virial theorem is presented and used to show that the lowering of the electron's total energy in bond formation can only occur through a lowering of its potential energy by being simultaneously near two or more nuclei. This principle is shown to apply equally well to covalent, ionic, and other types of bonding.
Keywords: chemistry; CHEM Study Film; George Pimentel
Downloads: 283
[movies]Synthesis of an Organic Compound (Second Edition) - CHEM Study, College of Chemistry and Lawrence Hall of Science, U.C. Berkeley
The synthesis of 2-butanone, a ketone, from 2-butanol, an alcohol, as an example of a common type of organic synthesis. Three basic steps are developed: synthesis, purification, identification. In the synthesis, 2-butanol is oxidized by sodium dichromate and sulfuric acid to yield 2-butanone. Purification is accomplished by solvent extraction with ether followed by distillation of the 2-butanone. The identity of the product is established by infrared absorption spectroscopy and then more clearly...
Keywords: CHEM Study; chemical education; science education; Sputnik-era curriculum; organic chemistry; chemical synthesis
Downloads: 461
[movies]Nitric Acid (Second Edition) - CHEM Study, College of Chemistry and Lawrence Hall of Science, U.C. Berkeley
Nitric acid acts as an acid in the manufacture of chemical fertilizers; it acts as a base in the manufacture of nitro compounds; it acts as an oxidizing agent in many systems. In making the fertilizer ammonium nitrate from nitric acid, it is necessary to neutralize the acidity of HNO3. This is accomplished by addition of NH3. In nitration reactions, such as the making of nitrobenzene, nitric acid is made to act as a base in the presence of sulfuric acid and forms nitronium ion which is the react...
Keywords: CHEM Study; nitric acid; chemical manufacturing; science education; Sputnik-era education; chemistry; chemical education
Downloads: 324
[movies]Mechanism of an Organic Reaction (Second Edition) - CHEM Study, College of Chemistry and Lawrence Hall of Science, U.C. Berkeley
A study of the hydrolysis of the ester, methyl benzoate, shows that the discovery of a reaction mechanism includes a determination of the chemical equation, the structures of the reactants and products, the fate of each atom of the reactants, and the structures of the intermediate molecules. The concepts of bond polarity and the effect of varying the structure of the ester also provide valuable hints...
Keywords: CHEM Study; chemical education; science education; Sputnik-era curriculum; organic chemistry
Downloads: 516
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